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[{"key": "dc.contributor.author", "value": "Ahonen, Mikko", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2013-03-12T16:13:27Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2013-03-12T16:13:27Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2013", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1256211", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/41056", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4ss\u00e4 ty\u00f6ss\u00e4 kehitet\u00e4\u00e4n ja testataan mittauslaitteistoa, jonka avulla voidaan tutkia puukuitususpension suotautumista. Tavoitteena on kehitt\u00e4\u00e4 laitteisto sellaiseksi, ett\u00e4 sill\u00e4 saadaan ker\u00e4tty\u00e4 hyv\u00e4laatuista dataa suotautumistapahtumasta ja voidaan toistaa suotautumisia mahdollisimman identtisin\u00e4. Ty\u00f6ss\u00e4 tutkitaan my\u00f6s teoreettista mallia, jonka avulla suotautumista on mahdollista simuloida annettujen l\u00e4ht\u00f6tietojen perusteella. T\u00e4t\u00e4 varten toiseksi tavoitteeksi asetetaan mittaussarjan tekeminen parannetulla laitteistolla ja teoreettisen mallin testaaminen saadun datan avulla.\n\nMittauslaitteistoon kuuluu suotautumislaite, tietokone ja ultra\u00e4\u00e4ni-Doppler nopeusmittauslaite. Suotautumislaite koostuu paksusta pystysuorasta vesis\u00e4ili\u00f6\u00f6n kiinnitetyst\u00e4 putkesta, jonka alap\u00e4\u00e4ss\u00e4 on viira. Puukuitususpensio laitetaan t\u00e4h\u00e4n putkeen ja tutkittava suotautuminen tapahtuu viiralla. Ultra\u00e4\u00e4ni-Doppler on laite joka mittaa nopeusprofiileja erilaisista virtauksista ultra\u00e4\u00e4nipulssien avulla. Mittauslaitteistolla on tarkoitus m\u00e4\u00e4ritt\u00e4\u00e4 puukuitujen nopeuskentt\u00e4 pystysuunnassa suotautumisen aikana. Nopeuskent\u00e4st\u00e4 voidaan ratkaista kuitukerrosten polkuviivat ja rakennepaine. \n\nAlkutilanteessa laitteistolla oli vaikea saada mitattua edes yht\u00e4 suotautumista onnistuneesti ja useamman mittauksen tekeminen per\u00e4kk\u00e4in oli mahdotonta. Suurimmat ongelmat aiheutti laitteistoon p\u00e4\u00e4ssyt ilma, joka h\u00e4iritsi ultra\u00e4\u00e4nell\u00e4 mittaamista. Laitteiston toimintaa parannettiin tiivist\u00e4m\u00e4ll\u00e4 vuotoja ja etsim\u00e4ll\u00e4 ilmanl\u00e4hteit\u00e4. Mittausten toistettavuuden parantamiseksi laitteistoon vaihdettiin toisenlainen pumppu ja lis\u00e4ttiin erin\u00e4isi\u00e4 osia. Parannusten j\u00e4lkeen tehtiin mittaussarja, joka sis\u00e4lsi kuusi erilaista suotautumista. N\u00e4ist\u00e4 kustakin piirrettiin kuvaaja rakennepaineelle ja polkuviivoille ja niit\u00e4 verrattiin teoreettisen mallin tuottamiin kuvaajiin.\n\nLaitteiston parantaminen onnistui eritt\u00e4in hyvin. Mittausten tekeminen helpottui ja tulosten laatu parani huomattavasti. Mittaussarjan tekeminen sujui my\u00f6s ongelmitta ja saadun datan avulla voitiin todeta teoreettinen malli toimivaksi. Mallissa on edelleen parantamisen varaa, mutta kaikkiaan sit\u00e4 voidaan pit\u00e4\u00e4 toimivana.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Mikko Ahonen (mienahon) on 2013-03-12 16:13:25.953244. Form: Pro gradu -lomake (1 tekij\u00e4) (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake-1-tekijae). JyX data:", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija@noreply.fi) on 2013-03-12T16:13:27Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201303121323.pdf: 8841197 bytes, checksum: c0678dcd5e1d63c179b16fb1c0030e58 (MD5)\nlicense.html: 107 bytes, checksum: a7d86e598caa500b1b433bbb9dc8ef1c (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2013-03-12T16:13:27Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201303121323.pdf: 8841197 bytes, checksum: c0678dcd5e1d63c179b16fb1c0030e58 (MD5)\nlicense.html: 107 bytes, checksum: a7d86e598caa500b1b433bbb9dc8ef1c (MD5)\n Previous issue date: 2013", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "56 sivua", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "suotautuminen", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Puukuitususpension suotautumisen kokeellinen mittaus", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201303121323", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.dcmitype", "value": "Text", "language": "en", "element": "type", "qualifier": "dcmitype", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Soveltava fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Applied Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2013-03-12T16:13:28Z", "language": null, "element": "date", "qualifier": "updated", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": "fi", "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4023", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kuidut", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mittaus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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